Generous red surfaces
Warm pigment spreads broadly across each blade and stays visible even when the plant is viewed from across the room.
Aglaonema 'Siam Red' 13cm
Normal price
€19,90
What does the legal guarantee mean for plants?
The legal guarantee concerns the plant’s conformity at delivery. It is not a guarantee of survival or growth for two years. Each issue is assessed taking into account the nature of the plant, its care and the conditions in which it is kept. Your statutory rights remain unaffected.
Aglaonema ‘Siam Red’
Colour this confident never asks permission
- Araceae
- Evergreen foliage
- Bright indirect light
- Moderate watering
- Dense growth
Aglaonema ‘Siam Red’ turns tropical foliage into a clear colour statement. Glossy blades combine vivid red and pink surfaces with green margins and veins, creating depth that shifts as the light changes.
Compact, upright yet full growth builds a balanced crown approximately 40 cm tall. It has enough intensity to act as a focal point while retaining the calm, polished outline of a well-shaped indoor plant.
What makes it distinctive
The foliage does not rely on a single colour; red, pink and green form layers that create depth and a crisp tropical identity.
A green frame
Green margins and veins define the red areas, keeping the pattern clear rather than visually flat.
Glossy, dense crown
Smooth surfaces catch soft light while closely spaced leaves create a full and carefully finished silhouette.
Why you will love it: vivid year-round colour comes in a manageable, compact shape that instantly energises neutral interiors.
In your space Placement & plant pairings Where it looks its best and which plants complement it
Where it looks its best
Place it on a side table, plant stand, generous shelf or bright office corner where the foliage is not compressed. Matte black, cream, deep burgundy or natural wood finishes make the red look cleaner and the green appear deeper.
Plants that set it off
Pair it with calmer greens or linear patterns that also enjoy bright indirect light and stable indoor conditions.
- Spathiphyllum wallisii — deep green foliage and white spathes visually cool the red tones.
- Ctenanthe burle-marxii — a fine silver-green pattern provides elegant contrast without introducing another strong colour focus.
- Philodendron hederaceum — trailing heart-shaped leaves soften the dense upright form.
Care at a glance
Light
Bright and indirect for full red colour. Softer light is tolerated, but avoid strong direct sun.
Water
Water when the top 2–4 cm of substrate feels dry, then soak fully and allow complete drainage.
Atmosphere
Keep conditions stable and warm at 18–26°C, away from cold draughts. Moderate household humidity suits it.
Pets
Not pet-safe. Keep it out of reach of animals and young children.
Selected for this plant
Substrate & nutrition
Detailed care Complete care guide Light, watering, humidity, substrate and nutrition in detail
Light and red colour
Provide abundant filtered light from an east-facing window or a bright position set back from south- or west-facing glass. Deep shade can reduce colour intensity, while hot sun leaves scorch marks.
Watering rhythm
Avoid a fixed calendar. Wait until the top 2–4 cm has dried, water until it runs from the base and let the pot drain completely before returning it to its cover pot.
Air humidity
Normal household humidity is usually sufficient. If the air is very dry, a humidifier or plant grouping is more useful than frequent misting, which can mark the glossy blades.
Temperature
Maintain 18–26°C and protect it from temperatures below 15°C. Cold glass, air conditioning and sudden moves can stress new growth.
Substrate
Choose an airy aroid mix with an organic component and coarse materials that keep roots oxygenated. Effective drainage matters more than watering frequency alone.
Feeding and repotting
In spring and summer, use a complete liquid fertiliser as directed, around every 4–6 weeks. Repot once roots genuinely fill the container and increase the diameter by only one size.
Botanical identity Cultivar origin Genus origin and the documented history of this cultivated selection
Genus Aglaonema
Aglaonema is an accepted genus in the Araceae family. Heinrich Wilhelm Schott published the botanical name in 1829, and the genus includes tropical evergreen aroids valued for ornamental foliage.
Selection ‘Siam Red’
Aglaonema ‘Siam Red’ is sold as a modern cultivated selection of genus Aglaonema. The trade name is used at genus level; a breeder, parentage and documented first-release date are not publicly supplied with the name.
Geographic origin of the genus
Wild Aglaonema species are native from northeastern India to Papua New Guinea and are associated mainly with humid tropical forest floors. That range describes the genus, not the place where cultivated ‘Siam Red’ was created.
Greenleaf for Plant Nerds Scientific details nobody asked for Botanical notes for anyone curious about the biology behind the red foliage
Red and green come from different pigments
Anthocyanins produce red and pink tones, while chlorophyll creates green areas and supports photosynthesis. Their visible balance forms the leaf pattern.
Pigments occupy tissue layers
Research on Aglaonema commutatum ‘Red Valentine’ found anthocyanins in palisade tissue, while chlorophyll occurred in both palisade and spongy tissues.
Light regulates anthocyanin synthesis
Light intensity can influence pathways that produce red pigment. Position therefore affects appearance, but this does not justify exposure to sun strong enough to heat and burn the leaf.
Its inflorescence is a spadix and spathe
As in many aroids, tiny true flowers sit densely on a spadix surrounded by a spathe. Foliage remains the principal ornamental feature of this cultivar.
Frequently asked questions
Useful answers about red foliage, growth and the signs this plant most often shows.
01 Why does the red colour look less intense?
Intensity is influenced by natural leaf-to-leaf variation, leaf age and available light. Provide bright indirect light and judge mature new growth; never expose the plant suddenly to strong sun.
02 Should the substrate stay wet all the time?
No. Let the top 2–4 cm dry before the next thorough watering. Constantly wet mix reduces oxygen around the roots and increases the risk of rot.
03 Why are the leaves curling or folding?
First check for very dry mix, hot or cold draughts and direct sun on the blades. Curling reflects growing conditions and is not a diagnosis by itself.
04 Does it need frequent misting?
No. Misting raises humidity only briefly and may leave marks. Stable moderate humidity, clean foliage and distance from radiators or air conditioning are more useful.
05 When does it need a larger pot?
Repot when roots have filled the container, water rushes through unusually fast or new growth slows without another cause. Choose a pot with drainage holes, only one size larger.
06 Is it safe for pets?
No, not if chewed. Calcium oxalate raphides can cause immediate irritation, pain and drooling. Keep it out of reach and contact a veterinarian if ingestion or a strong reaction occurs.
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Lovely apart. Irresistible together.
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